Michael K. Mahoney is Professor and Chair of the Computer Engineering and Computer Science Department at California State University, Long Beach. He started programming a NeXT Computer in January 1989 and attended NeXT Developer's Camp in May 1989. He has conducted several semesters of Cocoa software development seminars at CSULB and has led training in industry for Mahoney Consulting and the Anderson Software Group. Mahoney has given presentations on Object-Oriented Programming and Cocoa's Interface Builder at ACM meetings in Seattle, Los Angeles, Monterey, and New Orleans. He regularly teaches courses in Computer Graphics, User Interface Design, Object-Oriented Programming, and Discrete Mathematics. He is currently directing several students who are developing 3D computer graphics applications in the Cocoa environment. Mahoney is founder and President of SCaN, the Southern California NeXT Users' group, which has hundreds of members and meets monthly at various sites in Los Angeles County. He is also co-editor of SCaNeWS, SCaN's newsletter, which can be obtained from the nova.cc.purdue.edu archive site. Mahoney earned his Ph.D. in mathematics at the University of California, Santa Barbara in 1979. He has published papers in computer graphics, computer science education, and mathematics. He has won campus-wide teaching awards at both UCSB and CSULB. Simson L. Garfinkel is Chief Technology Officer at Sandstorm Enterprises, a computer security company that develops offensive information warfare tools used to probe the security of computer systems and test defenses. Garfinkel was the founder of Sandstorm Enterprises in 1998 and remains one of its principal stockholders. Prior to founding Sandstorm, Garfinkel founded Vineyard.NET, the Internet Service Provider (ISP) for Martha's Vineyard, in 1995. In 2000 he successfully negotiated the sale of Vineyard.NET to Broadband2Wireless (BB2W), a venture-funded broadband wireless ISP. When BB2W failed, Garfinkel negotiated the repurchase of Vineyard.NET from BB2W's bankruptcy court. Besides his activities as an entrepreneur, Garfinkel is a journalist and author. Since graduating from the Columbia School of Journalism in 1988, Garfinkel has had ongoing relationships with some of the nation's leading publications, including The Boston Globe, The San Jose Mercury News, The Christian Science Monitor, and Technology Review Magazine, in which he now published a regular column. He was one of the founding contributors to Wired Magazine. His articles have appeared in more than 50 publications including ComputerWorld, Forbes, The Nation, The New York Times, Omni and Discover. Garfinkel is the author or co-author of ten books, published by O'Reilly and Associates, Springer-Verlag, and IDG Books. His book Database Nation: The Death of Privacy in the 21st Century was endorsed by Ralph Nader, who called it "A graphic and blistering indictment" of the techniques used by businesses to invade our privacy and our lives. Garfinkel's most recent book, Web Security, Privacy and Commerce, is a detailed manual for securing Internet-based information systems. Garfinkel holds three degrees from the Massachusetts Institute of Technology and a master's degree in Journalism from Columbia University. He is a member of the Association for Computing Machinery (ACM), Computer Professionals for Social Responsibility (CPSR), and has a certification in computer security (CISSP) from International Information Systems Security Certifications Consortium. He is also an FAA licensed pilot. Garfinkel lives in Belmont and on Martha's Vineyard with his wife and three children.